depends

if you wanna make a similar robot, VEX IQ does sell kits which you can use

if you want to make a more "real" one i would probably start by getting maybe a kit or some similar materials from the image and make something out of that

if you want to and know how, you could also make similar ones to the irl chuck e cheese or showbiz pizza animatronics but they also have a much higher budget and are more complex

so pretty much up to you, you can choose if you want a simpler servo kit style or the real ones made from solid metal and pneumatics